!!! REMOVED ALL THOSE SUB-TREE IMPORTED STUFF !!! at last...
SUBMODULES (trunks) for LLVM * : llvm, clang & extra, compiler-rt, libcxx & abi, lld, lldb, test-suite.

    $ cat <<EOF | while read rmt; do echo $rmt; time git submodule add $rmt ; done
    git@github.com:llvm-mirror/llvm.git
    git@github.com:llvm-mirror/clang.git
    git@github.com:llvm-mirror/clang-tools-extra.git
    git@github.com:llvm-mirror/libcxx.git
    git@github.com:llvm-mirror/libcxxabi.git
    git@github.com:llvm-mirror/lldb.git
    git@github.com:llvm-mirror/lld.git
    git@github.com:llvm-mirror/compiler-rt.git
    git@github.com:llvm-mirror/test-suite.git
    EOF
LLVM v3.5.0 SUBMODULES CHECKOUT for clang + extra, llvm, compiler-rt, libcxx & test-suite.

No recent release branch for libcxxabi, nor lld, nor lldb -- left these
ones at trunk.
SUBMODULE lldb : Using my fork + 1 build quickfixes commit.
README.md : updated after today's Git submodules changes.